Results 91 to 100 of about 139,835 (226)

Investigations of the Sinus Aestuum DMD: An Anomalously Large and Compositionally Distinct Lunar Pyroclastic Deposit

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract The Sinus Aestuum (SA) dark mantle deposit (DMD) is a regional pyroclastic deposit on the central lunar near‐side. Spectra from the SA DMD are anomalous when compared to other DMDs and have been interpreted to represent a high abundance of the mineral spinel. The SA spinels are compositionally distinct compared to other lunar spinels and their
Cosmo T. Sikes   +2 more
wiley   +1 more source

Sensitivity of OMI SO2 measurements to variable eruptive behaviour at Soufrière Hills Volcano, Montserrat [PDF]

open access: yes, 2016
Since 2004, the satellite-borne Ozone Mapping Instrument (OMI) has observed sulphur dioxide (SO$_{2}$) plumes during both quiescence and effusive eruptive activity at Soufrière Hills Volcano, Montserrat.
Christopher, T   +3 more
core  

The dynamics of volcanic jets : Temporal evolution of particles exit velocity from shock‐tube experiments [PDF]

open access: yes, 2017
Pyroclast ejection during explosive volcanic eruptions occurs under highly dynamic conditions involving great variations in flux, particle sizes, and velocities.
Alatorre-Ibargüengoitia   +45 more
core   +2 more sources

Deformation and Gravitational Instability at Anak Krakatau (Sunda Strait, Indonesia): Insights From Direct Shear Experiments and Finite‐Element Models

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 5, May 2025.
Abstract Volcanic edifices are known to be unstable and their collapses have been observed several times in history. A collapse of island or coastal volcanoes is especially hazardous for the population living on regional shorelines due to the generation of destructive tsunami waves.
F. Stoepke   +6 more
wiley   +1 more source

Counterfactual Analysis of Runaway Volcanic Explosions

open access: yesFrontiers in Earth Science, 2019
“Few, beside the student of such phenomena, will be able to realize what would have resulted from a more concentrated liberation of the accumulating energy if, for instance, instead of being separated into moderate earth movements and gas emissions ...
Willy Aspinall   +2 more
doaj   +1 more source

Seismic Wavefield Change Preceding the Eruption of Shinmoe‐Dake, Kirishima Volcano, Japan, Inferred From Polarization Analysis

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 3, March 2025.
Abstract A volcanic tremor is a seismic event linked to volcanic processes, identified by ongoing ground shaking. They play a crucial role in understanding internal volcanic activities and forecasting eruptions. Detecting weak volcanic tremor signals before an eruption has remained a difficult task.
Takashi Hirose, Hideki Ueda
wiley   +1 more source

The 1723 AD violent Strombolian and phreatomagatic eruption at Irazu volcano (Costa Rica) [PDF]

open access: yes, 2013
The largest of the recorded historic eruptions at Irazú volcano began on February 16, 1723 and lasted until at least December 11. We here critically examine deposits of this eruption exposed on the summit of Irazú. Our reconstruction of the eruption is
Alvarado, G. E., Schmincke, Hans-Ulrich
core  

Similarities and differences in the historical records of lava dome-building volcanoes: implications for understanding magmatic processes and eruption forecasting [PDF]

open access: yes, 2016
A key question for volcanic hazard assessment is the extent to which information can be exchanged between volcanoes. This question is particularly pertinent to hazard forecasting for dome-building volcanoes, where effusive activity may persist for years ...
Almeev   +315 more
core   +3 more sources

Crystal‐Rich Magma Is Solid‐Like and Liquefies When Deformed

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 3, March 2025.
Abstract The rheology of highly crystalline magma regulates its mobility, which may, in turn, determine the occurrence and styles of volcanic eruptions. We measured the rheology of high‐temperature magma with a basaltic‐andesite composition to document the properties that govern the transition from solid‐like to liquid‐like behavior.
Atsuko Namiki   +7 more
wiley   +1 more source

Geoquímica preliminar de materiais lávicos e piroclásticos emitidos em 2014 na Ilha do Fogo (Arquipélago de Cabo Verde) [PDF]

open access: yes, 2015
Resumo ...
Caldeira, Rita   +11 more
core  

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